The former X Factor judge hit up a friend's house in Malibu yesterday to enjoy some fun in the sun, and if it wasn't for her tiny blue and white bikini, we would've had to dismiss Britney for smoking her gross cigarettes while she was there.

However, we are loving how fit Brit Brit is looking — especially because we know how much she loves to chow down on KFC, but considering that she has a new boy toy, David Lucado, we're thinking that she fills up on love now.

Guess all that dancing that Miz Spears has been doing has really paid off because homegirl is looking FIERCE!!